Biobee, In addition to Steve's comments, I would also caution that your sample size is extremely small (N=52) so you are unlikely to be able to do more than univariable analyses. [The reason that everything was significant in your initial PROC LOGISTIC is the FREQ statements. The FREQ statement treats those variables as observation multipliers, so you effective sample size became many thousands instead of 52.] Doc Muhlbaier Duke
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